Enhancing the concentration of TiO2 photocatalyst on the external surface of activated carbon by MOCVD

Activated carbon (AC) modified by HNO3, H2O2 and N2 + O2 was selected as the support during metal organic chemical vapor deposition (MOCVD) production of TiO2 photocatalysts in order to enhance the concentration of TiO2 on the external surface of AC. The catalytic performance of the HNO3 modified AC supported TiO2 catalyst was significantly higher than that of the original AC supported TiO2 catalyst due to the increased concentration of TiO2 on the external surface of AC confirmed by XPS and EDAX.